Soil testing is an essential tool for managing phosphorus, potassium and other nutrients in Iowa and many states. The units ...

Soil nutrients are not even. They are not even across a field and they are not even with soil depth. Nutrients can differ drastically just a few inches of soil away. This is true even in ...

Agricultural soil testing is critical to determining soil’s nutrient concentration and variability across your fields. It is ideal to test your fields’ soil at least every two to three years to inform ...

The University of Delaware (UD) has rated soils in terms of the likelihood of profitable responses to additions of phosphorus (P) and potassium (K) from fertilizers, manures, and other soil amendments ...

There are numerous approaches that can be used during an environmental investigation to evaluate subsurface conditions. These can vary based on the media requiring investigation and the ultimate ...

By reviewing and updating soil tests regularly and following research-based recommendations, farmers can improve fertilizer efficiency, maintain soil fertility and maximize profitability while ...

When observing unexplained stunting, wilting, or death in crops. When planting into a field with a history of nematodes. In areas with prior poor performance. In fall when nematode populations should ...